How to find the position of each array object using Nodejs

Question

How can i return array position of each object in an array.

code

let targets = [1.2, 2.3, 3.5];
let targetUpdatedOn = [2018-07-06, 2018-07-06, 2018-07-06];
let liveCoinPrice = 1.3;

let targets_hit = targets.filter(function(target_value) {
  return liveCoinPrice >= target_value;
});

This what is done to find array position.

targets_hit.forEach(function(key) { 

   if(targetUpdatedOn[key] === undefined){ 
       console.log(targetUpdatedOn); 
    } 
}

I want to return array position of each targets_hits . Any help would be thankful.

What is the value of targetUpdatedOn?

Ankit Agarwal
– Ankit Agarwal

2018-07-07 06:23:09 +00:00
Commented Jul 7, 2018 at 6:23 — Ankit Agarwal
– Ankit Agarwal, Commented Jul 7, 2018 at 6:23

23k · Accepted Answer · 2018-07-07 06:32:48Z

3

You can just do this.

targets_hit.forEach((item, index) => {
    console.log(item, index); // Item and index
    console.log(index) // Index only
});

The forEach method callback has 3 parameters.

Current Value
Index (Optional)
Array being traversed (Optional)

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach

edited Jul 7, 2018 at 6:32

answered Jul 7, 2018 at 6:24

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Comments

Niladri Basu · Accepted Answer · 2018-07-07 06:38:42Z

3

This is how you find position of each array object using array#forEach in JavaScript:

let targets = [1.2, 2.3, 3.5];

targets.forEach((element, index) => {
    console.log(`Object is ${element} and it's position is ${index}`);
});

answered Jul 7, 2018 at 6:38

Niladri Basu

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